Revisiones

AS

I found this course to be very informative for those who are beginning to learn about chickens or would like to expand their knowledge to improve conditions for their backyard flock.

MA

May 04, 2020

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fantastic course and if could you add the poultry feed formulation by using computer software course in coursera.org it will be the best work.\n\nthanks in advance with best Regards

De la lección

Behaviour Patterns of Chickens, Part 2

Welcome back everyone! During this week, we will consider the reproduction process in chickens, from courtship to brooding and hatching of eggs. We will then look at some abnormal behaviours that you might see in chickens. This week will be a combination of video lectures, in-video quizzes, video clips from outside sources, and a downloadable poster on eggshell abnormality.

Impartido por:

Dr Victoria Sandilands

Transcripción

Another behavior problem we might see is over-drinking. Over-drinking, which is otherwise called polydipsia, is abnormal drinking behavior. Some fowls will drink more than would be expected from their daily food intake possibly as a result of a consequence of environmental stress, such as boredom. Over-drinking has been shown in approximately 5% of domestic chickens that are fed ad libitum, or with constant access to food. Conversely, almost 100% of broiler breeders, which are chronically food deprived and where they're given ad lib access to water, will show excessive drinking. This is most likely their attempt to fulfill feeding motivation by performing a similar oral behavior. This type of thing is known as 'substitutability', whereby one behavior can substitute for another. Excessive drinking can be especially marked in growing broiler breeders, in response to the chronic food restriction to which they are subjected. As a result, access to water is often routinely removed from both growing and adult restrictive fed broiler breeders soon after feeding each day in order to reduce the problems with this over drinking. Which is wet litter, resulting from wet droppings and playing with the water and spilling it. Wet litter can be a concern, because it can cause health problems such as breast blisters, hock burn, and foot pad necrosis. The water removal, in this case, does not compromise the bird's welfare as long as it's done after food-related thirst has been satisfied and the ambient temperature is within the thermal neutral zone.